Intraspinal MDL28170 microinjection improves functional and pathological outcome following spinal cord injury.

TitleIntraspinal MDL28170 microinjection improves functional and pathological outcome following spinal cord injury.
Publication TypeJournal Article
Year of Publication2008
JournalJournal of neurotrauma
Volume25
Issue7
Pagination833-40
ISSN0897-7151
Abstract

Although calpain (calcium-activated cysteine protease) inhibition represents a rational therapeutic target for spinal cord injury (SCI), few studies have reported improved functional outcomes with post-injury administration of calpain inhibitors. This reflects the weak potency and limited aqueous solubility of current calpain inhibitors. Previously, we demonstrated that intraspinal microinjection of the calpain inhibitor MDL28170 resulted in greater inhibition of calpain activity as compared to systemic administration of the same compound. In the present study, we evaluated the ability of intraspinal MDL28170 microinjection to spare spinal tissue and locomotor dysfunction following SCI. Contusion SCI was produced in female Long-Evans rats using the Infinite Horizon impactor at the 200-kdyn force setting. Open-field locomotion was evaluated until 6 weeks post-injury. Histological assessment of tissue sparing was performed at 6 weeks after SCI. The results demonstrate that MDL28170, administered with a single post-injury intraspinal microinjection (50 nmoles), significantly improves both locomotor function and pathological outcome measures following SCI.

URLhttps://www.liebertonline.com/doi/abs/10.1089/neu.2007.0490?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%3dpubmed
DOI10.1089/neu.2007.0490
Short TitleJ Neurotrauma
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